Pencil-sharpener.



H. H. A. SCHWARZ.

PENCIL SHARPENER. APPLICATION FILED D1J0.27,1904.

Irn/cnEar PATENTED FEB. 6, 1906.

rinrrnn srnrns PATENT OFFICE.

PENClL-SHARPENER.

Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed December 27, 1904. Serial No. 238,553-

To (LZZ whom, it may concern.-

Be it known that I, HENRY IIERMAN ALEX- ANDER SOHWARZ, a citizen ofGreat Britain, residing at 61 Queens Park Terrace, Brighton, in thecounty of Sussex, England, have invented an Improved Pencil-Sharpener,of which the following is a specification.

This invention comprises a novel form of sharpening device for pencils,pastels, drawing-charcoal, and the like.

The device embodying the invention consists, primarily, of two essentialparts namely, a blade and a guiding surface arranged at an angle,preferably an acute angle, to the cutting edge of the blade.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand accompanying drawings, in which Figure 1 is a top plan view of adevice embodying the invention. Fig. 2 is a side elevation. Fig. 3 isaside elevation, the blade having been forced out of the Way of the guideto admit of sharpening of the cutting edge of said blade. Fig. 4 is aside elevation, partially in section, showing a modification of theinvention. Fig. 5 is a side elevation of a further modification of theinvention in which a removable handle is provided. Fig. 6 is a sideelevation of the blade and guide parts shown in Fig. 5. Fig. 7 is asectional view on the line X X of Fig. 2.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference character.

Referring to the drawings and specifically describing the invention, theblade is indicated at a, and the guide coacting with the blade isdenoted at c, the cutting edge of the blade a being arranged at an acuteangle to the guiding-si'lrface of the guide 0 aforesaid. The blade a andthe guide 0 may be fixedly or adjustably connected, and in.theconstruction shown in Figs. 1 to 3, inclusive, the parts a and c areformed at one end with a handle (I, said handle cl, with the blade aand. the guide 0, being formed from a single length of wire bent intosuitable shape and admitting of turning' the blade a away from theguide, as shown in Fig. 3, to facilitate sharpening of the cutting edgeb of the blade. The heel of the blade a is indicated at e, and this heelportion is preferably received or engaged in a groove or depressionformed in the adjacent face of the guide 0 at f. This affords aninterlocking connection between the heel of the blade and the guidewhich effectively resists lateral stress tending to separate theseparts. The stress mentioned might under some conditions detract from theefficiency of the device as a sharpener by causing the blade and guideto separate if it were not for the peculiar connection afforded by thedepression f, receiving the heel of the blade a. The guide a issomewhatflat in its formation, both of its longitudinal edges being blunt, andsaid guide is preferably arranged in a plane approximately at a rightangle to the plane passingthrough the body of the blade a.

In operating the device an end of the penoil is placed. between theguide 0 and the blade (1, the cutting edge I) of said blade resting onthe guide. By imparting a thrusting movement to the sharpenerlongitudinally of the pencil and toward the extremity to be sharpenedthe wood of the pencil will be sliced off readily with a clean cuttingaction. Charcoal or other drawing material may be pointed in the samegeneral manner.

It will be obvious that the bow or handle portion (1 may be of circularform or of like construction.

The modification in Fig. 4 illustrates a short construction of thesharpening device in which the cutting-blade a is formed with a shortarm 1', extending at a right angle thereto at the end opposite thatprovided with the cutting edge I). The guide (indicated at c) isarranged in substantially the same position relatively with regard tothe blade a as in the construction in Fig. 1; but in this instance theguide a is pivoted to the blade a, as at p, and a set-screw 0, carriedby the guide 0, is adapted to engage the short arm 1" to hold the guide0 in proper adjustment With regard to the blade at. The set-screw 0 maybe manipulated so as to permit separation of the guide 0 from the bladea for the purpose of sharpening the blade when necessary.

Fig. 5 shows the blade a pivotally connected with the guide 0, each ofwhich parts, however, being formed with shanks adapted to be received ina tubular handle d. The handle (1 when it receives the shank portions ofthe parts a and 0 holds these parts in proper relative position withregard to each other in a manner which will be evident. Re

moval of the handle cl will permit separating movement of the parts aand c and will permit sharpening of the former. The pivot connecting theparts a and c in Figs. 5 and 6 is indicated at p in Fig. 6. The shape ofthe blade and guide used, as above described, may be varied, though theblade is always gpproximately in the same plane as the han- Thesharpening device comprised in the invention is more efiicient than thesharpeners operating by rotary action, owing to the draw out secured bymy invention admitting of advantageous use in operating upon softmaterials, such as charcoal sticks, which are very likely to break.

Having thus described the invention, what is claimed as new is 1. Asharpening device of the class described embodying a guide provided witha suitable flat guiding-surface, and a cuttingblade having the cuttingedge thereof arranged at an acute angle to and longitudinally of saidguide and disposed at one side thereof, said guide comprising a flatbody extending from the blade at ap roximately a right angle thereto,the heel o' the blade being in contact with the adjacent side of theguide.

2. A sharpening device consisting of a cutting-blade, and a guide forsaid blade arranged at an acute angle to the cutting edge thereof, theheel of the blade being interlocked withthe guide, whereby these partsare reinforced against lateral movement relative to one another.

3. A sharpening device consisting of a cutting-blade, and a guide forsaid blade arranged at an acute angle to the cutting edge thereof, theguide comprising a fiat body located in a plane approximately at a rightangle to. the plane including the cutting-blade,

the body of the guide being formed with a recess or depression receivingthe heel of the blade and affording interlocking connection betweenthese parts.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 8th day of December, 1904.

HENRY HERMAN ALEXANDER SCHWARZ.

Witnesses:

HARRY PULLEN, LEWIS BENJAMIN STANNARD.

